<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">

    <title>背景动态变化的登录界面</title>
    <link rel="stylesheet" href="../css/57.css">
</head>

<body>
        <form action="/backstage/checkLogIn" class="container">
            <div class="tit">管理员登录</div>
            <input type="text" placeholder="账号" name="username">
            <input type="password" placeholder="密码" name="password">
            <button>登录</button>
        </form>
</body>

</html>